Abstract:
System for charging the battery (6) of an automotive vehicle furnished with at least one electric or hybrid traction chain comprising an electric machine (2) connected mechanically to the driving wheels and connected electrically on the one hand to an electrical supply network (1) and on the other hand to the battery (6) by way of an inverter (5). The charging system comprises, when the vehicle is on charge, the electric machine (2) and the inverter (5) of the traction chain as well as a control system able to control the inverter (5) so that the energy is tapped off from the electrical supply network (1) through the electric machine (2) and to the battery (6), while controlling the electric machine (2) in such a way that it does not produce any wheel torque.
Abstract:
Method of controlling charge of a battery (13), in particular of a battery of a motor vehicle, on the basis of a monophase network, in which: - the input voltage (Ve) is filtered; - the electrical power of the network is conveyed to the battery via a voltage step-down stage (3) and a voltage step-up stage (4) which are coupled together via an inductive component (Ld); and - an intensity (Id) of current passing through said inductive component is controlled as a function of an intensity setpoint (Idref), said intensity (Id) not being continuously controllable. According to this method, the intensity setpoint is formulated in such a way that said intensity setpoint has at least a first value and at least a second value greater than the first value, the intensity setpoint having the second value before the start of a phase in the course of which the intensity is not controllable.
Abstract:
The invention relates to a battery of accumulators (1), comprising a plurality of power storage cells (11, 12, 21, 22, 31, 32) and an electrical network (5) which connects said cells to one another. According to the invention, said cells are grouped together in composite cells (10, 20, 30) comprising two identical branches each consisting of a least one cell and said composite cells being connected in series to one another, the electrical network comprises: a means (52) for parallel or connection in series of the cells of each composite cell, and a means (57) for controlling said connection means, which are suitable for connecting the cells of each composite cell in parallel or in series in order to adapt the output voltage of the battery of accumulators to the desired value and in order to balance the charging states of the cells.
Abstract:
System for controlling the electromagnetic torque of an electric machine in particular for motor vehicle. System for control (1) of the electromagnetic torque of a permanent-magnet three-phase electric machine (10), comprising means (2) for measuring the current, transposition means (3) able to transpose the three measured currents into a direct component (Id) and a quadratic component (Iq) of current on the basis of a transform of three-phase systems, transformation means (4) able to convert a torque setpoint (Creq em) into a setpoint (lreq) for the quadratic component (Iq) of current and a setpoint (I req) for the direct component (la) of current, means for determining the control voltages (U1, U2, U3), and control means (9) able to apply the control voltages (U1, U2, U3) determined to the electric machine ( 10).
Abstract:
A method for controlling a power train and corresponding system. A method for controlling a power train equipping a motor vehicle and comprising an electric motor provided with a rotor and a stator, said method comprising the regulation of the currents of the rotor and the stator delivering control signals to the electric motor, said currents to be regulated and said control signals being expressed in a rotating reference system and comprising a plurality of axes. The method includes a measurement (E00) of the values of the currents of the rotor and the stator, a transformation (E12) of said measurements into said rotating reference system, a determination (E11) of minimum and maximum limits for each of the currents on the basis of said control signals, and a comparison (E30) of the measured signals with said minimum and maximum limits.
Abstract:
The invention relates to a method for controlling a battery charger for a motor vehicle, the battery charger including an input filter (1) connecting a three-phase power supply circuit to a buck converter (2), a boost circuit (3) being connected to the buck converter (2) and to the battery (BAT). The method includes the following steps: the output threshold voltage of the buck converter (2) is determined on the basis of the difference between a battery-current measurement and a battery-current request; the output voltage of the buck converter (2) is kept constant; and the switches of the boost stage (3) are controlled so as to be kept open.